ROBUST HALFTONING WITH GREEN-NOISE
Daniel Leo Lau, Gonzalo R. Arce and Neal C. Gallagher

ABSTRACT: Green-noise halftoning is a stochastic halftoning technique where the minority pixels of a binary dither pattern form homogeneously distributed pixel clusters. While clustering pixels increases its visibility, green-noise reduces the perimeter-to-area ratio of printed dots, thereby reducing the effects of printer distortions such as dot-gain and dot-loss. Using a stochastic dot model, several techniques are introduced for improving the spatial resolution of error diffusion with output-dependent feedback, a commonly used technique for generating green-noise halftone patterns.

APPEARED: 1999 Image Processing, Image Quality, Image Capture Systems Conference, Savannah, Ga. USA, April 26-28, 1999.

SPONSORS: This work was sponsored, in part, by the National Science Foundation under grant CDA-9703088, and by Lexmark International.





Dr. Daniel Leo Lau
Department of Electrical and Computer Engineering
University of Kentucky
453 Anderson Hall
Lexington, KY 40506-0046, USA
(859) 257-2300 x273
dllau@engr.uky.edu

last edited on 3/3/03